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baherus [9]
3 years ago
12

Give an example of change that includes more than one change​

Chemistry
1 answer:
bogdanovich [222]3 years ago
6 0

Answer:

candle.

Explanation:

Candle has more than one change chemical and physical.

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What is the mass of 1 mole of lithium?
Korolek [52]

<u>Answer:</u> The mass of 1 mole of lithium is 6.941 grams.

<u>Explanation:</u>

To calculate the mass of a compound or element, we use the formula used to calculate the number of moles:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Where,

Number of moles of lithium = 1 mole

Given mass of lithium = ? g

Molar mass of lithium = 6.941 g/mol

Putting value in above equation, we get:

1mole=\frac{\text{Given mass}}{6.941g/mol}\\\\\text{Mass of lithium}=6.941g

Hence, the mass of 1 mole of lithium is 6.941 grams.

5 0
2 years ago
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POINTS FOR HELP!!!!!
Fudgin [204]
MgSO4, CO2, AlCl3 are the answer
3 0
2 years ago
2. Determine the total pressure of a gas mixture that contains O2, N2, and He, if the partial
Burka [1]

Answer:

978mmHg

Explanation:

The total pressure of a gas mixture is defined as the sum of the pressure of each gas in the mixture.

If the mixture of gases you have 200mmHg for O₂, 350mmHg for N₂ and 428mmHg for He, total pressure of the mixture is:

200mmHg + 350mmHg + 428mmHg = <em>978mmHg</em>

4 0
3 years ago
What is the charge of an atom after it loses an electron during the formation of a bond
Mice21 [21]

Answer:

One positve charge

Explanation:

A neural atom is one that has equal number of protons and electrons. The protons are the positively charged subatomic particles in an atom. The electrons are the negatively charged particles in an atom.

For an atom to be charged during bond formation, it must lose or gain electrons. The number of electrons lost or gained conditions the charge on the ions it forms.

If in a neutral atom, it loses an electron, we see that the number of protons will now be more than the number of electrons by the 1 electron it lost. The charge will then be +1.

If a neutral atom gains an electron, the number of electrons will be more than that of the protons by 1. The charge will then be -1.

4 0
3 years ago
What mineral is this? Irregularly shaped, white with nonmetallic luster, the hardness of 2.5, shows cubic cleavage and dissolves
Alex777 [14]

<u>Answer:</u>

<em>The material we are talking about would be serpentine.</em>

<u>Explanation:</u>

This material is available in two colours green or white and it has a hardness that amounts to 2.5. This material has a luster that is nonmetallic and more of waxy in nature.  

This feature becomes Satiny when Nature of is material is Fibrous. This material is used as an insulating material against electricity as well as heat. The property of this mineral is very close to asbestos and is used when prevention from heat and electricity is required.

7 0
3 years ago
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